Oil-well pump.



i UNITED STATES PATENT OFFICE.

RALPH GREGORY, OF KANSAS CITY MISSOURI, ASSIGNOR T OIL WELL RECLAMATIONCOMPANY, 0F CHICAGO, ILLINOIS, A CORPORATION OF DELAWARE.

OIL-WELL PUMP.

Specification of Letters Patent.

Patented Oct. 7, 191%).

To all whom 'it muy conrfcm:

lhit known thatv I. lluru (humour, u citizen ot' the United States,residing' at hunsas ('ily. in thc county of Jackson and Stato ofMissouri, have invented certain new und useful Improvements in Uil-TellPumps, ot' which the following is n specilication. I

,This invention relates to oil well pumps und more especially to what vItcrm selfecontained pumps for pumping shallow wells, und my object is toproduce u simple pump susceptible of use in connection With an oil wellpumping apparatus on which tiled epplicntion on Januar)Y 20, 1919,Serial Number 272,152.

To this cud the invention consists in certain novel and useful featuresof construe tion and organization of ports as hcreinutter described undclaimed; und in order that it muy he fully understood, reference is tobc had to the accompanying drawing, in which: v

Figure 1, is a fragmentary vertical section of an oil well pumpembodying the invention.

Fig. Q, is a section on the line II-II of Fig. 1.

Fig. 3, is a section on the line III-III of In the said drawing 1indicates the casing and 2 the cavity at the lower end of said casing,of an oil well.

The pump proper is constructed as follows: 3 indicate sections of tubingconnected together by couplings 4 so to form a pump body of stlicientlength to extend from or above .the ground level nearly to the bottom ofthe cavity 2, and secured to and depending from a similar coupling 4secured to the lowermost. tube section 3 is a valve casing 5, containinga removable valve seat 6 for a bull-valve 7 or equivalent check valve,said seat also form# ing;r an attachment for a depending perforated tubeor strainer 8 to exclude particlesk foreign to oil from the valvecasing.

9 indicates tubing forming what I term the barrel of the well, andsecured to and extendin y from the casing 5 to a point preferablv a ovethe oil level in the Well, and said barre] is provided adjacent itslower end with perforations 10 to permit oil to pass from said4 barrelinto the body 3- -or fromjhe latter into said barrel. Just above thepcrforations 10 thc hurl-el is provided `with a check valve 11 adaptedfor opening upward, und at its upper end the barrel is connected by acou pling,r 12 with a depending pipe 13 adapted to extend u through thetop of the wel] for distribution of the oil, and the space between thedischarge pipe 13 and the body 3 at a point neer the con plin p 12 issealed by a coll-.Lr or ring 1 4.

Tie coupling has u perforated dinnietric portion lwhch does not closecommunica tion between the barrel 9 and discharge pipe 13, but. is forestablishing communication be tween the interior of thcbody portion 8,and an air tube 16 extending down intothe well and fastened at its lowerend to said con* pling 12.

In opcratimn fiuid under pressure is forced down through tube l so thatit, shall lower the level ot' thc oil in thc body portion 3, and hencedischarge ull of the oil standing in both the body portion undj thebarrel above the level of pcrt'orations 10, because the oil standing inthe body portion above the level of seid perforations is forced intothe. barrel and upward through the lutter and the discharge pipe 13, thecheck valve 11 moving upward from its scat to accommodate thisoperation.

When the pressure of Huid is cut off, the valve 11 reseats and thusretains a charge of oilwithin the barrel and discharge pipe fordischarge upon the nentI introduction of fluid under pressure throughsaid tube 16.

lt will heapparent that the oil well described is selfeontained, in thatit may be used regardless of the presence oi absence of the wellcesingl, that is the pump muy be inserted in a. hole not equipped with acasing.

From the foregoing it will be apparent that I have produced a pump ofthe character described which possesses all of the features pointed outas desirable, and While I have illustrated and described the preferredconstruction, if is to be understood that I reserve the right tonnakeall changes fallin within the principle of construction am? mode ofoperation involved and the spirit and scopfe of the appended claims.

I claim:

1. An oil well ump, comprising a tubular br fly, a casing e osing anddependingl from the lower end of saidfbody, a check valve in saidcasing, 5 tubular barrel within the bod and communicating at its lowerend wit said casing abovethe chock vulve, and communicating above theowing with said body, a discharge .pipe in the body, n oou ling unitingthe upper 'end of the barrel wit 1 the lower end of the discharge pipe,said aoupling huvingl; n'passngc lending to the inw rior of said iody,and an air iubeexbending down through the dischargc pipe andcommunicating with the. Suid passage.

2. An oil well puni '1, comprisin n'tubular body, n casing cioslng undspending from thv, Iowvr end of sind body, n chock vulve in said fusing,n tubulin' barrel within the body and ('omuiunicating at ib: lower endwith Suid casing ubovie the check waive, und above the casing with saidbody, n, check valve in the. barrel above the point of communicationthereof with said body, L discharge pipe in tho body, a coupling unitingthe uper end of the borrel with the iowci end o the dischul e pipo, saidcoupling hav.. ing a passage lea mg to the interior of said body, 'andnn air tube extending down `through the diSchargo pipe and communicatingwith the said passa e. In testimony whereof y RALPH GREGORY.

affix my signature.

